MappyHour shows you a Google Map with bars that offer happy hour food and drink specials. It's easy to rate bars and add new ones to the database.
Roger says:
MappyHour lets you scope out and plan your pub crawl before you leave the house or office. It includes happy hours (if available), drink specials, and even food to pour your beer on top of. It has many American cities and a couple of international ones (Sydney, Melbourne).
The biggest cities are the best developed, but users can add pubs, as well as ratings and reviews for any location. If there are no reviews for a bar, the site links to Yelp reviews. It also looks like the bars themselves can buy space on the site to list their drink special and hours.
Limitations: The review system's a little wonky. I lost a review I wrote by trying to pinpoint the bars location better. Also, it only shows the nearest 50 bars to your location. If an excellent bar is the 51st closest, it won't show up.
There are some competitors (Unthirsty, Stumbling Donkey), but MappyHour rules the roost.
